This is mostly true. Regardless of what you do, it's essentially impossible to overtrain the muscles in your lower body; your CNS will give out long before your muscles do.
That said, I'm a firm believer in taking some active rest if you really feel like you need it. You're doing SS, implying that you've never lifted before, so your body is going through tons of changes and adaptations. An extra few days off are not going to suddenly make you weak; in fact if you're very sore, it will probably make you stronger as more of your fibers will be regenerated and thus stronger, and you won't have to fight through the soreness which can inhibit your strength if you're not used to it.
You can do things to help with your recovery time too, like making sure you get enough sleep, taking in plenty of protein (2g per kg of bodyweight is a good rate to shoot for), taking your fish oil, and eating properly.
Best of luck, OP. Keep us updated.